feat: support editable installs for `pixi build` (#2661) #4

Job	Run time
pre-commit	38s
determine changes	4s
Cargo Machete	1m 1s
cargo clippy \| ubuntu	1m 8s
cargo rustdoc \| ubuntu	1m 43s
cargo test \| ubuntu	1s
build binary \| linux x86_64	1s
cargo test \| macos aarch64	5m 17s
cargo test \| macos x86_64	13m 8s
cargo test \| windows	1s
cargo fmt \| ubuntu	18s
build binary \| macos aarch64	3m 52s
build binary \| macos x86_64	5m 49s
build binary \| windows aarch64	1s
build binary \| windows x86_64	1s
pytest integration \| macos aarch64	3m 46s
test wheel installation \| macos aarch64 / Test Installation of Common Wheels \| macos-aarch64	1m 41s
pytest integration \| linux x86_64	0s
test wheel installation \| linux x86_64	0s
pytest integration \| windows x86_64	0s
test wheel installation \| windows x86_64	0s
	38m 30s

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